PL5500_双向升降压DC芯片
1 Features
Single Inductor Buck-Boost Controller for Step- Up/Step-Down DC/DC Conversion Single Inductor Buck-Boost Controller for Step- Up/Step-Down charging management Adjustable Input current and Output current by PWM. Adjustable Output voltage by PWM. Wide VIN Range: 3.0 V to 30 V, 36 V Maximum Flexible VOUT Range: 0.8 V to 36 V VOUT Short Protection High Efficiency Buck-Boost Transition Adjustable Switching Frequency Integrated 2-A MOSFET Gate Drivers Cycle-by-Cycle Current Limit and Optional Hiccup Optional Input or Output Average Current Limiting Programmable Input UVLO and Soft-Start Power Good and Output Over voltage Protection Selectable CCM or DCM with Pulse Skipping Available in QFN4x4-32 Package
2 Applications
Automotive Start-Stop Systems Backup Battery and Super capacitor Charging Industrial PC Power Supplies USB Power Delivery LED Lighting
PL3050_替代TPS61178负载断开功能同步升压DC
1 Features
Input Voltage Range :2.7V to 20V Output Voltage Range: 4.5V to 20V Minimal Boost Ratio is down to 1.0 Efficiency up to 96%: VIN = 7.2 V, VBUS = 16 V, IOUT = 2 A Two 7mΩ FETs Integrated Adjustable switching frequency up to 2.2MHz Programmable Cycle-by-Cycle Current Limit up to 15A Hiccup Short Protection with Load Disconnect Drive FCCM Operation under light load Input Under-Voltage Lockout Output Over-Voltage Protection at fixed 21V Over-Temperature Protection QFN13-FC 3*3.5 Package
2 Applications
Portable POS terminal Bluetooth Speaker E-Cigarette Thunderbolt Interface USB Type-C Power Delivery
3 Description
The PL3050 is a 20-V synchronous Boost converter with the gate driver built-in for load disconnect. The PL3050 integrates two low on resistance power FETs: A 7-mΩ switching FET and a 7-mΩ rectifier FET. The PL3050 uses the adaptive constant off time peak current mode control. The PL3050 operates in force continues mode to avoid audible noise under light load. The PL3050 includes configurable features include programmable cycle-by-cycle current limit and programmable switching frequency functions. The PL3050 could isolate the output from input side when shutdown. Once the output is shorted, it enters into the hiccup mode to lower the thermal stress and can recover automatically after the short condition releases. Additionally, the PL3050 also has OVP and thermal protection to avoid the fault operation. The PL3050 is in a 3.0-mm x 3.5-mm 13-pin VQFN package with enhanced thermal dissipation
